Patents Represented by Law Firm Pothwell, Figg, Ernst & Kurz
  • Amplifying device and transmission output control apparatus
    Patent number: 5903193
    Abstract: A second drain voltage switch is provided to turn ON/OFF a drain voltage in an amplifier in the final stage, the drain voltage in the amplifier in the final stage is turned ON when large output power is required, and the drain voltage in the amplifier in the final stage is turned OFF when small output power is required, thus a transmission output control apparatus capable of controlling output power in a wide range being obtained.
    Type: Grant
    Filed: July 29, 1997
    Date of Patent: May 11, 1999
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Keigo Adachi